Package org.geotools.filter

Class FilterSAXParser

Object
FilterSAXParser
public class FilterSAXParser extends Object
Creates filters from FilterFilter, which reads in a SAX stream and passes the appropriate messages here.
Author:
Rob Hranac, Vision for New York
, Chris Holmes, TOPP

  • Constructor Details

    • FilterSAXParser

      public FilterSAXParser()
      Constructor which flags the operator as between.

    • FilterSAXParser

      public FilterSAXParser(FilterFactory factory)
      Constructor injdection

  • Method Details

    • setFilterFactory

      public void setFilterFactory(FilterFactory factory)
      Setter injection

    • start

      public void start(short filterType) throws IllegalFilterException
      Handles all incoming generic string 'messages,' including a message to create the filter, based on the XML tag that represents the start of the filter.
      Parameters:
      filterType - The string from the SAX filter.
      Throws:
      IllegalFilterException - Filter is illegal.

    • value

      public void value(String message) throws IllegalFilterException
      Handles all incoming generic string 'messages,' including a message to create the filter, based on the XML tag that represents the start of the filter.
      Parameters:
      message - The string from the SAX filter.
      Throws:
      IllegalFilterException - Filter is illegal.

    • expression

      public void expression(Expression expression) throws IllegalFilterException
      Adds the passed in expression to the current filter. Generally created by the ExpressionSAXParser.
      Parameters:
      expression - The value of the attribute for comparison.
      Throws:
      IllegalFilterException - if the expression does not match what the current filter is expecting.
      TODO:
      REVISIT: split this method up.

    • create

      public Filter create() throws IllegalFilterException
      Creates the filter held in the parser.
      Returns:
      The current filter to be created by this parser.
      Throws:
      IllegalFilterException - If called before the filter is in a complete state.

    • setDistance

      public void setDistance(String distance, String units) throws IllegalFilterException
      This sets the distance for a GeometryDistanceFilter. It currently ignores the units, and attempts to convert the distance to a double.
      Parameters:
      distance - the distance - should be a string of a double.
      units - a reference to a units dictionary.
      Throws:
      IllegalFilterException - if the distance string can not be converted to a double.
      TODO:
      TODO: Implement units, probably with org.geotools.units package and a special distance class in the filter package. It would be nice if the distance class could get any type of units, like it would handle the conversion.

    • setAttributes

      public void setAttributes(Attributes atts)
      Sets the filter attributes. Called when attributes are encountered by the filter filter. Puts them in a hash map by thier name and value.
      Parameters:
      atts - the attributes to set.